How to deploy mongoDB Docker image to Elastic Bean

问题:

i'm running my multi services architecture using Docker and aws Elastic Beanstalk. One of those services is a mongoDB Docker image. It's supposed to expose port 27017 so other services can connect to the mongo DB in that port. Unfortunately Elastic Beanstalk internal nginx only exposes port 80, so my services aren't able to connect to mongo DB on port 27017.

I've seen some answers (https://stackoverflow.com/a/24831425/1116959) around using some config files inside the /.ebextensions folder, but i don't know how to get this working with that workaround.

My architecture also includes a rabbitMQ service and other application services (python+celery). Does anyone know if it's better to start using Amazon VPC?

Any help is appreciated, thanks

回答1:

Now several months later, this is possible by using the Multicontainer Docker environment type: http://docs.aws.amazon.com/elasticbeanstalk/latest/dg/create_deploy_docker_ecs.html.

Here's a proof-of-concept Dockerrun.aws.json which I have not yet used in production:

{
  "AWSEBDockerrunVersion": 2,
  "volumes": [
    {
      "name": "mongo-app",
      "host": {
        "sourcePath": "/var/app/current/mongo-app"
      }
    }
  ],
  "containerDefinitions": [
    {
      "name": "mongo-app",
      "image": "mongo",
      "essential": true,
      "memory": 6000,
      "command": ["mongod","--storageEngine=wiredTiger","--logpath=/var/log/mongodb/mongo.log"],
    "portMappings": [
        {
          "hostPort": 27017,
          "containerPort": 27017
        }
      ],
      "mountPoints": [
        {
          "sourceVolume": "mongo-app",
          "containerPath": "/data/db"
        },
        {
          "sourceVolume": "awseb-logs-mongo-app",
          "containerPath": "/var/log/mongodb"
        }
      ]
    }
  ]
}

This approach requires that the environment type is set to Multicontainer Docker and that a security group is attached to Elastic Beanstalk environment that allows accessing port 27017 from database clients.

回答2:

Dockerrun.aws.json has a whole section for ports. You could use that instead of the lower layer ebextensions config file.

{
  "AWSEBDockerrunVersion": "1",
  "Authentication": {
    "Bucket": "my-bucket",
    "Key": "mydockercfg"
  },
  "Image": {
    "Name": "janedoe/image",
    "Update": "true"
  },
  "Ports": [
    {
      "ContainerPort": "1234"
    }
  ],
  "Volumes": [
    {
      "HostDirectory": "/var/app/mydb",
      "ContainerDirectory": "/etc/mysql"
    }
  ],
  "Logging": "/var/log/nginx"
}